Respuesta:
x-5= 12
x= 12+5
x= 17
x+8=15
x= 15-8
x=7
2x - 6=12
2x= 12+ 6
2x= 18
x=18/2
x=9
3x+ 6=18
3x= 18- 6
3x= 12
x=12/3
x=4
1/4x=5
x=5 . 4
x= 20
1/2x+5= 1/4-2x
1/2x+2x+5= 1/4
5/2x+5= 1/4
5/2x= 1/4-5
5/2x=-19/4
5x/2=-19/4
5x=2(-19/4)
5x=-38/4
5x=-19/2
5x= -9,5
x=-9,5/5
x= -1,9
Explicación paso a paso:
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Respuesta:
x-5= 12
x= 12+5
x= 17
x+8=15
x= 15-8
x=7
2x - 6=12
2x= 12+ 6
2x= 18
x=18/2
x=9
3x+ 6=18
3x= 18- 6
3x= 12
x=12/3
x=4
1/4x=5
x=5 . 4
x= 20
1/2x+5= 1/4-2x
1/2x+2x+5= 1/4
5/2x+5= 1/4
5/2x= 1/4-5
5/2x=-19/4
5x/2=-19/4
5x=2(-19/4)
5x=-38/4
5x=-19/2
5x= -9,5
x=-9,5/5
x= -1,9
Explicación paso a paso: